A068735 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -10 .. 10.

1, 21, 73151, 57201104003, 9661874271897648847

Offset

1,2

Links

Table of n, a(n) for n=1..5.

Crossrefs

By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.

Sequence in context: A283841 A100414 A189310 * A172800 A013768 A182149

Adjacent sequences: A068732 A068733 A068734 * A068736 A068737 A068738

Keyword

nonn,more

Author

R. H. Hardin, Feb 26 2002

Extensions

a(5) from Sean A. Irvine, Mar 09 2024

Status

approved